5430-856 - External Speed Sensor Module

SPECIFICATIONS:

Part Number: 5430-856
Manufacturer: Woodward
Series: NetCon / MicroNet
Product Type: Speed Sensor Module / Extender Card
Speed Input Channels: Two (2) Configurable Channels
Speed Range: 0 to 10,000 RPM
Accuracy: ±0.25% of full scale
Output Signal: 4–20 mA (Configurable)
Dimensions: 3.5 x 2.5 x 1.5 inches (89 x 64 x 38 mm)
Weight: 0.8 kg (~1.76 lbs)
Availability: In Stock
Country of Origin: USA

FUNCTIONAL DESCRIPTION:

The 5430-856 is an External Speed Sensor Module (also referred to as an Extender Card) designed and manufactured by Woodward for the NetCon and MicroNet digital control series. This module excels in monitoring and controlling the rotational velocity of industrial machinery, including gas and steam turbines, reciprocating engines, and compressors. By providing a dedicated hardware interface for speed sensing, the 5430-856 ensures that the central control system receives highly accurate, low-latency speed data essential for safe and efficient governor operation.

VERSATILE SENSOR COMPATIBILITY:

The External Speed Sensor Module is engineered for flexibility, supporting a wide range of industrial speed sensing technologies:

• Magnetic Pickups (MPU): Passive sensors that generate a voltage frequency as gear teeth pass the sensor head.
• Hall Effect Sensors: Active sensors that provide reliable low-speed detection down to zero RPM.
• Proximity Sensors: Eddy-current or capacitive sensors used in specialized machine monitoring.

ADVANCED SIGNAL CONDITIONING:

To maintain signal integrity in electrically noisy power plant environments, the module incorporates:

• Automatic Gain Control (AGC): Automatically adjusts the input sensitivity to maintain a consistent signal level regardless of the gap between the sensor and the target gear.
• Active Noise Filtering: Reduces electromagnetic interference (EMI) and harmonic distortion, preventing phantom speed signals or jitter in the control loop.
• High-Resolution ADC: Converts frequency inputs into high-precision digital data for the controller backplane.

SYSTEM EXPANSION & REDUNDANCY:

As a part of the Woodward expansion architecture, the 5430-856 allows for increased I/O density within distributed control systems (DCS). Its dual-channel design facilitates redundant speed sensing configurations, where two independent sensors can monitor the same shaft. This ensures that a single sensor failure does not result in a "Loss of Speed" trip, significantly increasing the overall availability and reliability of the prime mover.

WHY BUY FROM WOC:

WOC is a premier provider of legacy and current Woodward control hardware. We maintain a significant inventory of the 5430-856, available in both unused and professionally refurbished conditions. Each speed sensor module is rigorously tested on our specialized frequency simulators to verify measurement accuracy and gain control response. Backed by a standard warranty and 24/7 technical support, we ensure your machinery's speed monitoring system remains precise and reliable.

FREQUENTLY ASKED QUESTIONS:

What is the 5430-856?

It is an external speed sensor module used in Woodward NetCon and MicroNet control systems. It acts as the interface between physical speed sensors (like MPUs) and the digital control logic.

How many speed inputs does the 5430-856 support?

The module features two independent, configurable speed input channels, allowing for either dual-machine monitoring or redundant sensing of a single machine.

Can this module detect zero speed?

When paired with active sensors like Hall Effect or proximity probes, the External Speed Sensor Module can accurately monitor very low speeds. However, standard passive Magnetic Pickups (MPUs) require a minimum rotation speed to generate sufficient voltage for detection.

Does the module provide a 4-20 mA output?

Yes, the External Speed Sensor Module is capable of providing a 4-20 mA analog output proportional to the measured speed, which can be used for remote metering or as an input to secondary monitoring systems.